MIC2172 100 kHz, 1.25A Switching Regulator IC

MIC2172 100 kHz, 1.25A Switching Regulator IC

The MIC2172 IC are complete 100kHz SMPS current-mode controllers with internal 65V 1.25A power switches. The MIC2172 features external frequency synchronization or frequency adjustment, while the MIC3172 features an enable/shutdown control input. The MIC3172 is for applications that require on/off control of the regulator. The MIC3172 is externally shutdown by applying a TTL low signal to EN (enable).

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• 1.25A, 65V internal switch rating
  

• 3V to 40V input voltage range
  

• Current-mode operation
  

• Internal cycle-by-cycle current limit
  

• Low external parts count
  

• Operates in most switching topologies
  

Specifications of MIC2172 100 kHz, 1.25A Switching Regulator IC

• Input Voltage: Wide Input Voltage Range: 3.0V to 40V

• Output Voltage: Adjustable Output Voltage: 1.25V to 35V, depending on the external resistor divider

• Output Current: Maximum Output Current: 3A (typical)

• Efficiency: High Efficiency: Up to 90% depending on the input/output voltage conditions

• Switching Frequency: Fixed Switching Frequency: 200kHz (typical)

Package Includes

• 1 x MIC2172 100 kHz, 1.25A Switching Regulator IC